i have noticed my coolant level message on my instrument cluster has come on twice and I have had to fill to level. It has happened though with only at the most between fills at a 200 to 300 mile range. Vehicle only has 63,343 miles on it. Using the Cool Dex coolant I dont see where I am losing coolant, visible leaks, so where is it going? Hopefully not in the cylinders? Any ideas, should it go to shop? Why also does my yellow triangle light go on now and staying when I turn on the vehicle?